Open helmets with wide brim, aka kettle hat ( in sources from 14-15th cent. called: klobuk, klobuczek, eisenhunt ) was very popular head protection, used by less wealthy postmens and infantry, as well as knights.

Kettle hat has its upper part in form of a usual bascinet and slightly retrosed brim. Crest goes through upper part and front part of brim.

Kettle hats of this type were very popular pattern, which we can see on numerous iconographical representation from 2nd half of 14th cent. and 15th cent. : Poliptch from Grudziadz and Great Chornicle of France (~1370).